WorksheetsLevel 2 Cold Water Plumbing Exam - Version 2
Total questions: 18
Worksheet time: 9mins
What is the primary function of the Water Regulations Advisory Scheme (WRAS)?
To regulate water bills
To ensure plumbing fittings meet legal and safety standards
To test the water quality in homes
To provide insurance for plumbers
Which of the following is considered a below-ground water source?
River
Reservoir
Borehole
Lake
What is the correct sequence of water supply from the treatment plant to a home?
Trunk Main → Principal Main → Local Main → Communication Pipe → Service Pipe
Principal Main → Trunk Main → Local Main → Communication Pipe → Service Pipe
Trunk Main → Local Main → Communication Pipe → Principal Main → Service Pipe
Local Main → Principal Main → Trunk Main → Communication Pipe → Service Pipe
What device is used to measure water pressure?
Weir cup
Pressure gauge
Flow restrictor
Stop valve
What is the purpose of a drain-off valve?
To control water flow
To maintain pressure levels
To empty the system fully
To regulate temperature
What type of valve is a fullway gate valve most suited for?
High-pressure systems
Low-pressure gravity-fed systems
Water heaters
Hot water cylinders
A stop valve is primarily used for what type of system?
Gravity-fed low-pressure systems
Mains pressure high-pressure systems
Radiator systems
Wastewater systems
What is a distinguishing feature of a Part 4 float valve?
Uses a rubber washer
Equilibrium valve with a quieter fill
Bottom entry only
Only available in brass
Why should a cold water storage cistern (CWSC) be installed on plywood rather than chipboard?
Plywood is more resistant to water damage
Plywood is cheaper
Chipboard is too flexible
Plywood provides better insulation
What is the purpose of a single check valve?
To prevent leaks
To protect Fluid Category 1 from Fluid Category 2
To control water flow
To filter water impurities
What backflow protection is required for an outside tap?
Single check valve
Double check valve
Pressure relief valve
Isolation valve
What is the purpose of an RPZ (Reduced Pressure Zone) valve?
To prevent Fluid Category 1 from mixing with Fluid Category 2
To reduce mains pressure to safe levels
To protect against Fluid Category 4 contamination
To regulate water temperature
What does back siphonage mean?
Water flowing backward due to negative pressure
Excessive water pressure
Water escaping due to a burst pipe
Poor water filtration
What is an air gap (AG) used for?
Pressure regulation
Backflow prevention
Reducing water hammer
Improving water quality
How high must the air gap (AG) be between the float-operated valve (FOV) and the overflow/warning pipe?
10mm
25mm
50mm
100mm
What is an AUK 3 air gap used for?
Toilets
Kitchen sinks
Shower heads
Storage cisterns
What does permanent decommissioning of a water system involve?
Temporary isolation of water supply
Closing the stop valve and draining the system
Repairing leaks in the pipework
Fitting a new float valve
What is a passive dead leg?
A branch pipe that remains in use
A pipe that has no water flow and can promote bacterial growth
A pipe that connects multiple fixtures
A type of drain valve
